Patents Assigned to Enzon Pharmaceuticals, Inc.
  • Publication number: 20100093839
    Abstract: Oligonucleotides directed against the hypoxia-inducible factor-1? (HIP-1?) gene are provided for modulating the expression of HIF-1?. The compositions comprise oligonucleotides, particularly antisense oligonucleotides, targeted to nucleic acids encoding the HIF-1?. Methods of using these compounds for modulation of HIF-1? expression and for the treatment of diseases associated with the hypoxia-inducible factor-1? are provided. Examples of diseases are cancer and pre-eclampsia. The oligonucleotides may be composed of deoxyribonucleosides, a nucleic acid analogue, or Locked Nucleic Acid (LNA) or a combination thereof.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 15, 2010
    Applicants: Enzon Pharmaceuticals, Inc., Santaris Pharma A/S
    Inventors: Charlotte Albaek Thrue, Anja Molhart Hog, Paul E.G. Kristjansen
  • Publication number: 20100056543
    Abstract: Improved posaconazole-based compositions and methods of treating and preventing fungal infections, cancer or metastatic diseases are disclosed. In preferred aspects, the conjugates are PEG-posaconazole conjugates in which the PEG has a molecular weight of about 20,000 daltons.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 4, 2010
    Applicant: Enzon Pharmaceuticals, Inc.
    Inventor: Hong ZHAO
  • Publication number: 20100056555
    Abstract: New methods of treating Ras associated cancer, and especially for treating cancer that is resistant or refractory to other treatment methods, including resistant or refractory to treatment with C225 and/or CPT-11, are provided. The new methods employ PEG-conjugated 7-ethyl-10-hydroxycampothecin, alone, or in combination with other art-known anticancer agents or modalities.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 4, 2010
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Ivan HORAK, Puja SAPRA
  • Patent number: 7671067
    Abstract: The present invention relates to methods of treatment of non-Hodgkin's lymphomas. The present invention includes administering polymeric prodrugs of 7-ethyl-10-hydroxy-camptothecin to patients in need thereof.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: March 2, 2010
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventor: Puja Sapra
  • Patent number: 7642072
    Abstract: A new nucleic acid molecule that is codon-optimized to expressbeta interferon in Escherichia coli with greater efficacy.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 5, 2010
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: David Ray Filpula, Amartya Basu
  • Publication number: 20090318538
    Abstract: Polymer conjugates containing nucleotides and/or oligonucleotides are disclosed.
    Type: Application
    Filed: August 20, 2009
    Publication date: December 24, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Richard B. GREENWALD, Susan L. ADLER
  • Patent number: 7625898
    Abstract: Improved posaconazole-based compositions and methods of treating and preventing fungal infections, cancer or metastatic diseases are disclosed. In preferred aspects, the conjugates are PEG-posaconazole conjugates in which the PEG has a molecular weight of about 20,000 daltons.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: December 1, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventor: Hong Zhao
  • Publication number: 20090286859
    Abstract: The present disclosure relates to an LNA oligonucleotide consisting of a sequence selected from the group consisting of 5?-(Tx)GxGxcsasasgscsastscscsTxGxT-3? and 5-(Gx)TxTxascstsgscscststscsTxTxA-3?, wherein capital letters designate a beta-D-oxy-LNA nucleotide analogue, small letters designate a 2-deoxynucleotide, underline designates either a beta-D-oxy-LNA nucleotide analogue or a 2-deoxynucleotide, subscript ā€œsā€ designates a phosphorothioate link between neighbouring nucleotides/LNA nucleotide analogues, and subscript ā€œxā€ designates either a phosphorothioate link or a phosphorodiester link between neighbouring nucleotides/LNA nucleotide analogues, and wherein the sequence is optionally extended by up to five 2-deoxynucleotide units. The LNA oligonucleotides are useful for modulating the expression of hypoxia-inducible factor-1a (HIF-1a), e.g. in the treatment of cancer diseases, inhibiting angiogenesis, inducing apoptosis, preventing cellular proliferation, or treating an angiogenic disease, e.g.
    Type: Application
    Filed: June 3, 2009
    Publication date: November 19, 2009
    Applicants: Enzon Pharmaceuticals, Inc., Santaris Pharma A/S
    Inventors: Majken Westergaard, Charlotte A. Thrue, Frank W. Rasmussen, Henrik F. Hansen
  • Patent number: 7601798
    Abstract: The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal tosylate with a protected amine salt to form a polymer containing a terminal protected amine and thereafter deprotecting the polymer containing the terminal protected amine to form the polymer having a terminal amine. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: October 13, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Belen Rubio
  • Patent number: 7595304
    Abstract: Polymer conjugates containing nucleotides and/or oligonucleotides are disclosed.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: September 29, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Richard B. Greenwald
  • Publication number: 20090232833
    Abstract: The present invention provides polymeric delivery systems including hindered ester moieties. Methods of making the polymeric delivery systems and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventor: Hong ZHAO
  • Publication number: 20090221471
    Abstract: Vancomycin-polymer conjugates are disclosed. In preferred aspects, polymer residues which are hydrolysis resistant in vitro, are selectively attached to the sugar amino and/or N-methyl amino groups of vancomycin and related compounds. Vancomycin-polymer conjugates made by the methods and methods of treatment using the conjugates are also disclosed.
    Type: Application
    Filed: November 21, 2008
    Publication date: September 3, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Richard B. Greenwald, Hong Zhao
  • Publication number: 20090214472
    Abstract: Biologically-active, interferon-beta 1b-polymer conjugate compositions are disclosed. The polymer portion is preferably a polyalkylene oxide polymer having a molecular weight of at least about 12 kDa. Methods of making and using the same are also disclosed.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 27, 2009
    Applicant: ENZON PHARMACEUTICALS INC.
    Inventors: David Ray Filpula, Karen Yang, Amartya Basu, Maoliang Wang
  • Publication number: 20090203706
    Abstract: The present invention provides polymeric linkers containing branching moieties. Methods of making the polymeric linkers and methods of making conjugates using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: August 13, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong Zhao, Prasanna Reddy
  • Publication number: 20090202573
    Abstract: The present invention provides polymeric conjugates containing positively charged moieties. Methods of making the polymeric delivery systems and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: August 13, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Prasanna REDDY, Ivan HORAK, Jing XIA
  • Patent number: 7569657
    Abstract: The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal tosylate with a protected amine salt to form a polymer containing a terminal protected amine and thereafter deprotecting the polymer containing the terminal protected amine to form the polymer having a terminal amine. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: August 4, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Belen Rubio
  • Publication number: 20090181914
    Abstract: The present disclosure concerns LNA oligonucleotides having a (sub)sequence of the general formula 5?-(MeCx)(Tx)MeCxAsAstscscsastsgsgsMeCxAx)(Gx)(c)-3?, and preferably of the general formula 5?-MeCxTxMeCxAsastscscsastsgsgsMeCxAxGxc-3?, wherein capital letters designate an LNA nucleotide analogue selected from ?-D-oxy-LNA, ?-D-thio-LNA, ?-D-amino-LNA and ?-L-oxy-LNA, small letters designate a deoxynucleotide, and underline designates either an LNA nucleotide analogue as defined above or a deoxynucleotide. Such LNA oligonucleotides exhibit surprisingly good properties with respect to inhibition of the expression of Survivin by means of an anti-sense mechanism, and thereby lead to reduction or inhibition of tumour development in vivo.
    Type: Application
    Filed: October 10, 2008
    Publication date: July 16, 2009
    Applicants: SANTARIS PHARMA A/S, ENZON PHARMACEUTICALS, INC.
    Inventors: CHRISTOPH ROSENBOHM, LENE S. KJAERULFF, MAJKEN WESTERGAARD, MARGIT WISSENBACH, JENS B. HANSEN, MARLENE ASKLUND
  • Publication number: 20090156629
    Abstract: The present invention provides releasably-linked indenoisoquinoline polymer conjugates. Methods of making the conjugates and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: June 8, 2007
    Publication date: June 18, 2009
    Applicant: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Ying Gao
  • Publication number: 20090074706
    Abstract: A four arm-polyethylene glycol-7-ethyl-10-hydroxycamptothecin conjugate, such as, is disclosed. Methods of making the conjugates and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: November 20, 2008
    Publication date: March 19, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Maria Belen RUBIO, Dechun WU, Puja SAPRA
  • Publication number: 20090047270
    Abstract: What is provided is a method of treating a patient having a tumor comprising administering an effective amount of adenosine deaminase, preferably polyalkylene oxide conjugated, to a patient in need thereof.
    Type: Application
    Filed: April 18, 2008
    Publication date: February 19, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: David R. Filpula, Puja Sapra